title: Effective antibacterial and antioxidant properties of methanolic extract of Laurus nobilis seed oil.
abstract: This study was carried out to determine the in vitro antimicrobial and antioxidant activities of the essential oil, seed oil, and methanolic extract of seed oil obtained from Laurus nobilis L. (Lauraceae). The methanolic extract of seed oil exhibited more effective antibacterial activity comparing to essential oil and seed oil, GC-MS analyses of the essential oil resulted in the identification of 25 compounds. 1.8-Cineol (44.72%), a-Terpinyl acetate (12.95%), Sabinene (12.82%) were the main components. The fatty acid composition was characterized with the high content of linoleic acid (40.79%) and lauric acid (38.08%). The 50% (IC50) inhibition activity of the essential oil on the free radical DPPH was determined as 94.655 mg ml(-1), whereas IC50 value of methanolic extract of seed oil was found unstable. In the case of the linoleic acid system, oxidation of linoleic acid was inhibited by essential oil and methanolic extract of seed oil, which showed 64.28 and 88.76% inhibition, respectively. The inhibition value of the methanolic extract of seed oil was quite close to the synthetic antioxidant BHT, 92.46% inhibition.
authors.affiliation: Letters Biology Department, Faculty of Sciences, Mustafa Kemal University, Hatay - 31040, Turkey. birgulozcan@gmail.com
authors.forename: Birgul
authors.initials: B
authors.lastname: Ozcan
authors.forename: Mari
authors.initials: M
authors.lastname: Esen
authors.forename: M Kemal
authors.initials: MK
authors.lastname: Sangun
authors.forename: Arzu
authors.initials: A
authors.lastname: Coleri
authors.forename: Mahmut
authors.initials: M
authors.lastname: Caliskan
mesh_terms: D000900:Anti-Bacterial Agents / Q000737:chemistry / Q000494:pharmacology*; D000975:Antioxidants / Q000737:chemistry / Q000494:pharmacology*; D027442:Laurus / Q000737:chemistry*; D010938:Plant Oils / Q000737:chemistry / Q000494:pharmacology*; D012639:Seeds / Q000737:chemistry*
chemical_list: D000900:Anti-Bacterial Agents; D000975:Antioxidants; D010938:Plant Oils